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<head><meta charset="utf-8"><title>how to decide which edition applies · t-compiler · Zulip Chat Archive</title></head>
<h2>Stream: <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/index.html">t-compiler</a></h2>
<h3>Topic: <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/how.20to.20decide.20which.20edition.20applies.html">how to decide which edition applies</a></h3>

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<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/how%20to%20decide%20which%20edition%20applies/near/159623870" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/how.20to.20decide.20which.20edition.20applies.html#159623870">(Feb 28 2019 at 15:34)</a>:</h4>
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<p>is there an open issue regarding "how to decide what edition applied when a construct came from multiple sources"</p>
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<p><span class="user-mention" data-user-id="116083">@pnkfelix</span> one such issue is <a href="https://github.com/rust-lang/rust/issues/50122" target="_blank" title="https://github.com/rust-lang/rust/issues/50122">https://github.com/rust-lang/rust/issues/50122</a>, fyi</p>



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<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/how%20to%20decide%20which%20edition%20applies/near/159623904" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/how.20to.20decide.20which.20edition.20applies.html#159623904">(Feb 28 2019 at 15:34)</a>:</h4>
<p>I seem to recall there were multiple of them at some point, <span class="user-mention" data-user-id="123856">@Vadim Petrochenkov</span> may recall</p>



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<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/how%20to%20decide%20which%20edition%20applies/near/159645899" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Vadim Petrochenkov <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/how.20to.20decide.20which.20edition.20applies.html#159645899">(Feb 28 2019 at 19:51)</a>:</h4>
<p>There was also <a href="https://github.com/rust-lang/rust/issues/50376" target="_blank" title="https://github.com/rust-lang/rust/issues/50376">#50376</a>, but for that issue a decision was made and implemented in the edition hygiene PR <a href="https://github.com/rust-lang/rust/issues/56053" target="_blank" title="https://github.com/rust-lang/rust/issues/56053">#56053</a></p>



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<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/how%20to%20decide%20which%20edition%20applies/near/159645954" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Vadim Petrochenkov <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/how.20to.20decide.20which.20edition.20applies.html#159645954">(Feb 28 2019 at 19:51)</a>:</h4>
<p><a href="https://github.com/rust-lang/rust/issues/50130" target="_blank" title="https://github.com/rust-lang/rust/issues/50130">#50130</a> is somewhat similar in spirit.</p>



<hr><p>Last updated: Aug 07 2021 at 22:04 UTC</p>
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